"The Poverty Tour" traveled to 18 American cities to see and hear first-hand from the nation's poor. Many of the "new" poor were formerly middle class, but had lost their jobs, homes and possessions in the economic downturn. A homeless camp near Ann Arbor, Michigan, offers a glimpse into that world. CNN's Don Lemon talks with the men behind the tour, Princeton University's Dr. Cornel West and Tavis Smiley, host of "Tavis Smiley" on PBS.